Harley MS 80, ff 99r-106r

The fifth unit of the manuscript relates to alchemy and consists of treatises relating to alchemy, theology, birds and trees, and the making of talismans:

Marbodus Redonensis, Liber lapidum seu de Gemmis (ff. 99r-101v);

'Figurae divisionis' (f. 102v);

Anonymous treatise on precious stones (ff. 103r-104r);

'Figurae divisionis', notes on precious stones, birds and trees from India, Egypt, Arabia, and Africa (f. 104v);

Anonymous treatise on precious stones (ff. 105r-105v);

Liber magnus sigillorum attributed to Zael (Sahl ibn Bishr al-Isra'ili) (ff. 105v-106r).

Decoration:

Spaces (3-4 lines; ff. 99r, 103r) left blank for initials. Chapter and paragraph initials (1-3 lines) and rubrics drawn only partially in red, leaving blank spaces for initials and rubrics in contrasting colour. Guide letters to decorated initials. Heading (f. 103r) in red. Paragraph marks and section numbers in the margins in red. Spaces left blank in the text, possibly for rubrics and diagrams. Tables (ff. 102v, 104v) in black and red by a contemporary hand.